Dynamics of soil cover change under the impact of irrigation and melioration

   A study has been conducted to determine how modern agriculture impacted the structure and reclomative state of light serazem soils 77 years after land development. In the first place, when analyzing soil survey materials, a change in the structure of the soil cover of light serazems is revealed. Long-term irrigation of light serazem soils causes grassing, which causes groundwater levels to rise. Due to these changes, serazem soils under the conditions of the new soil moisture regime acquired new features and properties that allow them to be assigned to another genetic group which is called the group of semi-hydromorphic serazem-meadow soils. As a result of irrigation, leaching, there are significant changes in the chemical, physico-chemical and agrotechnical properties of soils. This provision can be supplemented with materials that testify to the processes of salinization and desalinization of soils. Long-term irrigation and unregulated water intake in weakly soddy conditions leads to an increase in the level of groundwater, which causes a high intensity of the solonchak process and causes secondary soil salinization.

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